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dnted tapes' @zi-iwi @Witty GEORGE a. WING, or ALBANY, NEW YORK,A

Letters Patent No. 106,442, dated August 16, 1870.

sTovE 0R FURNAcE-GRATE,

Th Schedule referred to in these'Letters Patent: and making part of theA same v -or furnace-grate that is particularly designed for rectangular tire-boxes ofcook-stoves or furnaces for steamengines or other calorifc engines; also, to construct such a grate in such a manner that the bed of coals and fire lying upon it may be thoroughly agitated, so that every part ofthe tire-bed may he cleared of ashes and other unconsmned products of combustion; also, to construct a dum per and shaker for snc-h a grate, by which it may be easily/'operated Vfor the above-meutioned purposes.

In the accompanying drawing- Figure l is a perspective view of my invention.

Figure 2 is a cross-sectional View of one end of the rock-shaft B B and sliding shaft C C.

Figure 3 is a central longitudinal section. p

Figure 4 isa view ofthe shaker and dumper M.

'A is the hed-plate for the support of the grate. It is a frame of rectz'mgular form, having the sides of its inner edges raised,'and its two opposite inner and longest sides corrugated, as shown in tig. 1. lhe grate is suspended in and supported by this frame A in. the usuall manner.

My improved grate is constructed in twodistinct parts, one fixed o1' stationary, the other movable or sliding upon the stationary part, and both fixed and movable parts are together capable of being rota-ted, so as to dump the contents of the tire-box whenever required. v

The xed part of thc grate consists of a cent-ral rock-shaft, B B,

Its two ends or bearings Dl which are supported upon the bed-plate A, are made rounding in the usual manner.

The middle portion of rock-shaft B B is fiat and depressed below the level of its ends, as shown in figs. 1 and 3.

Extending from each side.of the centralgpart of shaft B B are arms ff, upon which are secured the stationary grate-bars l) b.

Arms f f extend nearly to the full width ot the oper.- ing in the bedplate or frame A, forming supports lto the-sliding bars o c, as shown in tig. 1.

The movable or sliding part ofthe grate consists of a centralshaft, C C, its middle portion corrugated and its two4 vends of a rectangular form, to tit and slide easily into a similarly-shaped recess in the upper part of the ends of rook-shaft B B, as shown iu section in o* cSecured to central shaft O C are two cross-pieces,

a a., bearing beneath their ends thesliding grate-bars One end of shaft G C is made to project beyond the end ofthe rock-shaft B B, and is constructed with two recesses, e, into which two pins, p p, on the shaker M, are inserted when it is required to shake the grate.

M is a shaking and dumping attachment to the grate. Its form is shown in fig. 4, and its mode of operation indicated in tig. 1.

It will be seen from the above description that this grat-e may be easily dumped by placing the opening nof dumper M upon the long or projecting end of rockshaft B B, and then overturning it. Also, that to shake the grate we insert the pins 1) p ot' the shaker M into recesses or slots e at the outer end `ot' sliding bar O C, and then, by a reciprocating motion of shaker, we clear the whole lower part ot' the tire-box of all ashes and clinkers androtl'er. refuse substances.

I claim as my invention- 1. llhe combination and arrangemel'lt of rock-shaft B B, arms ff, and grate-bars b b, with sliding shaft C C, arms c c, and grate-bars c c, substantially as herein shown and for the purpose set forth.

2. 1n a grate constructed as above described, the corrngations in the fixed and movable bars b b and e c, and the oorrugations h-h on the inner sides of the bed-plate A.

3. ll'he combination and arrangement of shaking and dumping attachment M with sliding shaft C C and rock-shaft-B B, substantially as and for the purpose herein shown and described.v

GEORGE A. WING.

\Vitnesses:

JOHN S. BANTHAM, J oHN K. FINCK. 

